Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
Bergantiños
←
Proto-Celtic
*Brigantī
(derived)
←
Proto-Celtic
*brigantīnos
(derived)
←
Latin
(derived)
←
Old Welsh
brennin
(cognate)
←
Old Welsh
brennhin
(mention)